Theory of Happiness
May 5, 2025single
Fan actions
Track this comeback and prepare for release day.
Streaming links are not available in Fandomloop yet. Track this comeback and check back for updates.
- Release date
- May 5, 2025
- Release type
- single
- Artist
- FTISLAND
About this comeback
Theory of Happiness by FTISLAND (2025). Release details will be updated as more information becomes available.